Metal-bending machine



May 19, 192-5.

0. M. YODER METAL BENDING MACHINE Filed Sept. 18, 1922 3 Sheets- Sheet 1 I I rwwmm'. O Hg Mmymcw May 19, 1925.

C.'M.YODER METAL BENDING MACHINE Filed Sept. 18, 1922 May 19, 1925. 1,538,540

C. M. YODER METAL BENDING MACHINE Filed Sept. 18, 1922 3 Sheets-Sheet 5 Patented May e, 1925.

STATES PATENT OFFICE.

CARL "M. YOIDER, OF-GLEVELAND, OHIO.

METAL-BENDING mncrrmn.

. a 3 Application filed September 18, 1922. Serial no. 588,830.

To all whom it may. concem:

citizen of the United States, residing at scription taken in connection with the ac-' Oleveland, in the county of Ouyahoga and State of Ohio, have invented certain new and useful Improvements in and Relating to Metal-Bending Machines, of which the following is a specification.

This invention relates to a machine for bending metal, more particularly to a machine capable of bending a strip of metal both longitudinally and transversely to form verying-shaped articles, such as fenders for vehicle bodies.

One object of the invention is to provide an improved machine of this character of relatively simple construction adapted to bend sections-of metal to curve them in one direction and then by the substitution of a bending element to bend or curve the sections of. metal in the reverse direction throughout a portion of their lengths.

Another object of the invention is to provide a, machine adapted to first bend a section of metal into curvilinear'shape transversely or both transversely and longitudinally and then to bend the metal on transverse lines in a reverse direction throughout a portion of its length to form what may be termed a reversely curved section. Other objects of the invention Wlll be apparent to those skilled in the art which my invention relates from the following decompanying drawings, wherein 7 Figure 1 is a front elevation of a machine. showing the attachment. thereto of a shoe capable of bending sections of metal on transverse and longitudinal lines.

Fig. 2 is a fragmentary view in top plan of the machine-shown in Fig. 1.

- Fi 3 is a fragmentary sectional view on the line 3--3 of Fig. 1, showing in dotted lines the operative position to which the shoe may be moved to effect bending of the-- metal.

Fig.4 is .a fragmentary sectlon on th line lt-f Fig. 1.

Fig. 5"is'a fragmentary sectlon on the line 5-5 of Fig. 1, showing the operation of curving a section of metal.

Fig. 6 is a fragmentary view, enlarged, showing the machine when the main bending shoe has been .removed and the reverse curve shoe substituted, this view being substantially on the line 6-6 of Fig. 7

Fig. 7 is a plan view of the machine with the reverse curve shoe thereon.

F 1g. 8 is a fragmentary top plan View simllar to Fig. 7 but with certain of the parts omitted.

Fig. 9 is a fragmentary sectional view on the line 99 of Figs. 7 and 8, the dotted lines showing the position to which the re verse curve. shoe may be moved.

Fig. 10 is a fragmentary sectional view on the line 10-1O ofv Fig. 8.

Fig. 11 is a fragmentary sectional view showing the position of the reverse curve shoe when a section of metal is to be bent.

Fig. 12 is a view showing the operation of reversely curving a section of metal.

Fig. 13 is a perspective view of a section of metal rolled or bent by a machine embodying my invention.

The machine shown in Figs. 1,2, 3 and 4. is similar to that illustrated, described and claimed in my Patent Number 1376497,

dated May 3, 1921 (except as to certain features of construction of the arms 6"), for

such machine and the operation thereof will 4 not be necessary, since reference may be made to the aforesaid patent. This invention relates to certain improvements in such machine, whereby it may be. operated to first bend sections of metal in one'direction and then by the substitution of certain elements or parts to bend the sections of metal in a reverse direction throughout a portion of their lengths to provide reversel y or compound curved metal sections, such as vehicle fenders,one bein'gshown in Fig. 13 of the drawings.

After the section of metal has been bent or rolled in the manner shown in Fig. 5, I remove from the machine certain elements, or parts constituting the bending devices 5 and associated elements and substitute therefor a reverse curve mechanism, indi-' cated as an entirety at18. To permit of this substitutiorn. I remove the following elements, namely," the shoe..5 and connecting member 6 by .the detachment of the movably secured at its opposite ends to the arms 6*. The yoke 19 is preferably of inverted U-shape in order that the reverse curve shoe, indicated at 20,- may be disposed in operative relationship .to the concave bending device or roller 5*. By this arrangement it will be seen that the shoe 20 will traverse a path that is concentric to the axis of the roller 5*. The opposite ends of the yoke 19 are preferably secured to the arms 6*" by cap screws 21, fitting openin s 21 formed therein. The shoe 20 has a ho y portion 20 which conforms in shape from end to end to the shape of the roller 5 and up-turned ends 20 disposed parallel to the inner faces of the flanges 5 of the roller 5 so as to conform to the cross sectional shape of the bent section of metal to be reversely curved. The central portion of the shoe body 20*" is extended inwardly as shown in Figs. 11 and 12 in order that it may engage the metal sections at all points closely adjacent to the line of contact between the rollers. The opposite ends of the shoe.20 are preferably secured to the yoke 19' by cap screws 22, openings being formed in the yoke and the free ends in the shoe 20 for this purpose.

From the foregoing descri tion it ill be seen that the shoe 20 is rigi ly secured to the yoke 19 and the latter is rigidly secured to the arms 6 so that the shoe will have a fixed relationship to the circumferential surface of the roller 5* at all times as it swings about its axis. e

In order to operate the reverse curve mechanism 18, I prefer to provide a pair of rods 23 and to mount their inner ends in openings 24 formed in the free ends of the arms 6*. The rods 23 may be connected-together by a cross bar 25 which facilitates their operation simultaneously.

To operate the machine, with the reverse curve. mechanism assembled thereon, a

J reverse direction.

curved section of metal A is introduced between the rollers 5*, 5", and the shoe 20 is positioned to engage the upper'surface of the metal section, as shown in Fig. 11; then as the metal section oves forwardly, the shoe 20 is'operated dd wnwardly about the axis of the roller 5 see Fig. 12-thereby curving the metal on transverse lines in a When the desired portion of the metal section has thus been curved, the machine is stopped and the metal section removed.

From the foregoing description itwill be seen that I have provided a machine which is constructed to bend sections of metal first in one direction and then in the other direction to make complete reversely curved fenders. In my construction the same elements are utilized to support the bending shoes, so that one shoe may be readily substituted for the other. As the supporting elements for the shoes swing about the same gest themselves without departing from the spirit and scope thereof. My disclosures and the description herein are purely illustrative and are not intended to be in any sense limiting.

What I claim'i's: k 1. In apparatus of the class described, the combination of a pair of rollers, a guide arranged to support a section of metal to feed it between said rollers, and a supporting means on the opposite side of said rollers from said guide and adapted to removably support either a shoe to co-operate with said guide, whereby the section of metal may be curved on transverse lines in one direction, or a shoe for curving a curved section of metal ontransverse lines in the reverse direction, said supporting means being movable in either direction about the axis of one of said rollers according to the. shoe supported thereon.

2. Inapparatus of the class described, the combination ofa pair of rollers, a guide arranged to support a section of metal in position to feed it between said rollers, and a pair of arms on the opposite side of said rollers from said guide and adapted to removably support either a shoe to co-operate metal may be curved on transverse lines in one direction, or a shoe for curving a curved section of metal on transverse lines in the reverse direction, said arms being movable ,in either direction about the axis of one of said rollers according-to the shoe supported thereon.

3. In apparatus of the class described, the combination of a pair of rollers arranged to receive between them a curved section of metal, a pair ofarms mounted to swing about the axis of one of said rollers, a yoke extended between and rigidly secured at its opposite ends to said arms, and a shoe' rigidly secured to said yoke and arranged to engage the curved section of metal passing between said rollers to curve it in a reverse direction, and means for operating metal passing between said rollers to curve it in a reverse direction, and means for operating said arms, yoke and shoe about the axis of one of said rollers.

5. In apparatus of the class described, the combination of a pair of rollers arranged to receive between them a curved sectlon of metal, a pair of-arms mounted to swing about the axis of one of said rollers, a yoke extended between and removably secured rigidly at its opposite ends to said arms, a shoe secured to said yoke and arranged to engage the curved section of metal passing between said rollers to curve it in a reverse direction, and rods engaging said arms to operate them.

6. In apparatus of the class described,

the combination with a support, of a pair of bending rolls rotatably mounted thereon, a guide at one side of said rolls arranged to feed sheet metal thereto, a shoe at the other side of said rolls adapted to bend the metal on transverse lines to curve it in one direction as it'feeds between said rolls, a shoe on the corresponding side of said rolls adapted to engage the metal and bendit on transverse lines to curve it in a reverse direction as it feeds between said rolls, and a pairof supports adapted to support either of said shoes, said supports being mounted to rotate about the axis of one of said rolls.

In testimony whereof, I have hereunto subscribed my name.

' CARL M. YODER. 

